gistfile.patch

diff --git a/node_modules/@npmcli/arborist/lib/arborist/load-virtual.js b/node_modules/@npmcli/arborist/lib/arborist/load-virtual.js
index ed0e47daf..1d4e20292 100644
--- a/node_modules/@npmcli/arborist/lib/arborist/load-virtual.js
+++ b/node_modules/@npmcli/arborist/lib/arborist/load-virtual.js
@@ -308,11 +308,13 @@ module.exports = cls => class VirtualLoader extends cls {
       target,
       pkg: target && target.package,
     })
-    link.extraneous = target.extraneous
-    link.devOptional = target.devOptional
-    link.peer = target.peer
-    link.optional = target.optional
-    link.dev = target.dev
+    if (target) {
+      link.extraneous = target.extraneous
+      link.devOptional = target.devOptional
+      link.peer = target.peer
+      link.optional = target.optional
+      link.dev = target.dev
+    }
     return link
   }
 }
diff --git a/node_modules/@npmcli/arborist/lib/arborist/rebuild.js b/node_modules/@npmcli/arborist/lib/arborist/rebuild.js
index 4f3fc1b9c..24ed819fe 100644
--- a/node_modules/@npmcli/arborist/lib/arborist/rebuild.js
+++ b/node_modules/@npmcli/arborist/lib/arborist/rebuild.js
@@ -225,6 +225,10 @@ module.exports = cls => class Builder extends cls {
         !(meta.originalLockfileVersion >= 2)
     }
 
+    if (!node.target) {
+      return
+    }
+
     const { package: pkg, hasInstallScript } = node.target
     const { gypfile, bin, scripts = {} } = pkg
 
diff --git a/node_modules/@npmcli/arborist/lib/calc-dep-flags.js b/node_modules/@npmcli/arborist/lib/calc-dep-flags.js
index 95ecc8a61..9f9113e11 100644
--- a/node_modules/@npmcli/arborist/lib/calc-dep-flags.js
+++ b/node_modules/@npmcli/arborist/lib/calc-dep-flags.js
@@ -31,6 +31,9 @@ const calcDepFlagsStep = (node) => {
 
   // for links, map their hierarchy appropriately
   if (node.isLink) {
+    if (!node.target) {
+      return node
+    }
     node.target.dev = node.dev
     node.target.optional = node.optional
     node.target.devOptional = node.devOptional
@@ -100,11 +103,12 @@ const unsetFlag = (node, flag) => {
       tree: node,
       visit: node => {
         node.extraneous = node[flag] = false
-        if (node.isLink) {
+        if (node.isLink && node.target) {
           node.target.extraneous = node.target[flag] = false
         }
       },
-      getChildren: node => [...node.target.edgesOut.values()]
+      getChildren: node => !node.target ? []
+      : [...node.target.edgesOut.values()]
         .filter(edge => edge.to && edge.to[flag] &&
           (flag !== 'peer' && edge.type === 'peer' || edge.type === 'prod'))
         .map(edge => edge.to),
diff --git a/node_modules/@npmcli/arborist/lib/shrinkwrap.js b/node_modules/@npmcli/arborist/lib/shrinkwrap.js
index 93e1cb1a4..7a777b1b3 100644
--- a/node_modules/@npmcli/arborist/lib/shrinkwrap.js
+++ b/node_modules/@npmcli/arborist/lib/shrinkwrap.js
@@ -1023,6 +1023,9 @@ class Shrinkwrap {
     }
 
     const depender = node.target
+    if (!depender) {
+      return lock
+    }
     if (depender.edgesOut.size > 0) {
       if (node !== this.tree) {
         const entries = [...depender.edgesOut.entries()]